Haugania oederi (Rhizocarpon oederi) at How Beck, near Stainforth

A year ago, on a slab of rock near How Beck I found the bright rust orange lichen. It was a year ago. It looked like one for those two bright rust coloured lichens with black apothecia that grow on rocks with a metal influence. But which one?   Haugania (formerly Rhizocarpon oederi ) or Tremolecia atrata?

A year later I discovered another Bright rust coloured lichen south east of Settle.

I can see they are different.  

This Stainforth one is Haugania oederi.  It has blue black apothecia that are rugose, almost gyrose. The areoles are slighly convex.  (Whereas Tremolecia  has apothecia that have big rims and the central part of the apothecia on at least some apothecia is sunken.  Tremolecia areoles are concave and stick up at the edges.

My Haugania oederi was in SD8267 (almost SD8268)  (i  the red square just north of Settle and recorded in 2017)  so it was a different specimen to the one marked in SD8266 a km to the south.